Shim-cutting press



Sept 2,1924; L50Z510 G. H. NORTH SHIN CUTTING PHI-35S Filed April 14.1923' I Shanta-Shae! 1 s 11 Z? 12 i l t l 2 i GeorgeHMrZh Wm INVENTORa/QOLL 64w Al FORNEY WITNESS:

Sept. 2, 1924. v 1,507,510-

' G. H. NORTH smu cu'wnkd PRESS Filed April i4, 192. 2 shun-shut 2ATTORNEY Patented Sept. 2, 1924.

PATENT OFFICE.

GEORGE H. NORTH, or LA CROSSE, KANSAS.

SHIM-CUTTING PRESS.

Application filed April 14, 1923. Serial No 632,074.

T 0 all whom it may concern." I

Be it known that I," Gnonon H. NORTH, a citizen of the United States,residing at La Crosse, in the county of Rush and State of Kansas, haveinvented new and useful Improvements in a Shim-Cutting Press, of whichthe following is a specification.

This invention relates to a shim cutting press and has for its primaryobject to produce a simple and easily operated construction.

A further object is to produce a shim cutting press in which both themale and female dies are removably secured thereon whereby dies ofvarying sizes and shapes may be employed.

A further object is to produce a shim cutting press in which the dieswill have a shearing action in the cutting of the shim; wherein the cutshim is automatically ejected; wherein the plunger carrying the male dieis contacted by one of two cam surfaces on an operating lever wherebydifferent size shims may be cut, and also whereby a plurality of suchshims may be cut in a single operation.

With these and other objects in view, this invention will be betterunderstood from the following detailed description taken in connectionwith the accompanying drawings wherein:

Figure 1 is a front elevation of a shim cutting press in accordance withthis invention.

Figure 2 is a side elevation thereof.

Figure 3 is a sectional view on the line 33 of Figure 1.

Figure 4 is a sectional 4*4 of Figure 2.

Figure 5 is a perspective view of the male die member.

Figure 6 is a similar view of the female die member.

Figure 7 is a similar view of the bed plate upon which the female diemember rests.

Figure 8 is a similar view of the ejector.

Figure 9 is a sectional view on the line 99 of Figure 7.

Again referring to the drawings, the numeral 1 designates the flat baseof the improvement. From the rear of the base there arises a standard 2having its upper end provided with a transverse rounded bore thatreceives therethrough the shaft 3 of the operating handle 4:. Below thehandle View on the line verse slot 7 and below the slot with; an"

annular enlargement 8. Surrounding the plunger in contacting engagementwith the upper end of the sleeve andthe lower wall of the enlargement 8there is a helical spring 9 of a sufficient strength to normally holdthe plunger elevated.

The handle 4 has its inner end fiat and has secured preferably byremovable means 10 thereon an enlargement 11. The enlargement is in thenature-of a block whose outer end is rounded to provide a cam surface 12that terminates inan inwardly directed shoulder 13, and from thisshoulder the block is shaped to provide a second cam surface 14:.

The lower end of the plunger 6 is hollow and receives therein the stem15 of the male die 6. Suitable binding means 17 carried by the plungerengages the stem 15 to hold the die 16 properly positioned on theplunger.

By reference to the drawings it will be noted that the cutting surfaceof the die 16 is arranged at an inclination with respect to the'base 1so that a shearing action against the metal producing the shim will beobtained and the said metal cut in an easier manner than were the activeface of the die straight.

Resting on the base 1 directly below the die 16 there is the bed plate18 for the female die plate 19. The plate 19 has 0pen-- ingstherethrough for screws 20, the said screws passing through similaropenings in the base 1. The die plate has other openings adjacent to thediagonal corners thereof that receive therethrough pins 21 carried bythe bed plate.

The male die is, of course, provided with the usual rounded centralenlargement, the female die having its walls correspondingly shaped. Thebed plate is centrally provided with a rounded projection 22 thatprovides a guide for an ejector member or plate 23.

The ejector 23 is, of course, shaped to correspond with the walls of thefemale as well as the male die member and is provided with plate 18 andhave their heads 25 received spaced studs 24 that pass through the bed ain depressions 26 in the base 1. Surrounding the studs and exerting apressure between the ejector plate and the bed plate there are helicalsprings 27. The plate 23 is depressed when the male die enters thefemale die so that the cut shim will rest directly on the said plate.WVhen the male die is raised out of the female die, the springs 27 willforce the plate 23 to normal position, as illustrated in Figure 9, sothat the cut shims will be ejected by the said plate.

The construction of the improvement will, it is thought, be apparentfrom the foregoing description and the operation will likewise beapparent to those skilled in the art to which such inventions relate.Varyv ing sizes of both male and female dies may be employed, the femaledie plate, however, being provided with openings for the sustainingscrews and for the pins carried by the bed plate. The outer cam memberwill act in the slotted head of the plunger to force the male die partlyinto the female die when comparatively thin shims are to be made. Thesecond or inner cam member acts upon the plunger to further force themale die into the female die when a plu rality of shims or when a singleshim of a determined thickness is to be cut. The double cam arrangementon the handle per mits of an easier operation of the plunger.

arising therefrom, a handle member swingably supported on the standard,an enlargement removably secured on the inner end of the handle havingtwo spaced cam surfaces, a spring influenced plunger supported forvertical movement on the standard and having a slotted upper end inwhich the cam enlargement on the handle is received, a male dieremovably secured to the plunger, a bed plate resting on the base, afemale die plate guided on the bed plate removably secured thereto andto the base, and a spring -influenced ejector in the female die member.

In testimony whereof I afliX my signature.

GEORGE H. NORTH.

